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Getting a FILE from a std::fstream

Getting a FILE from a std::fstream: a task in Terminal-Lego-15k (Harbor dataset). Write a C++ program that demonstrates how to obtain a C-style FILE pointer from a C++ std::fstream object. The program should show a practical example where a C++ library function accepts an fstream, but internally…

The task

Write a C++ program that demonstrates how to obtain a C-style FILE* pointer from a C++ std::fstream object. The program should show a practical example where a C++ library function accepts an fstream, but internally needs to call a C library function that requires a FILE* pointer.

Part of PrimeIntellect/Terminal-Lego-15k.